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Project comparison
Promptfoo vs crawl4ai
Compare adoption, momentum, maintenance health, and project basics before choosing which tool to evaluate deeper.
Promptfoo
Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic.
Best matched with other agent tools.
23.5K
Stars
+2.3K
Weekly
90/100
Health
crawl4ai
Open-source web crawler and scraper for LLMs and AI agents: any website into clean, LLM-ready Markdown. Run it yourself, or use Crawl4AI Cloud with one key.
Best matched with other agent tools.
84.7K
Stars
0
Weekly
66/100
Health
Quick Take
Adoption
crawl4ai has the larger GitHub footprint with 84.7K stars.
Momentum
Promptfoo is currently growing faster at +2.3K stars this week.
Maintenance
Promptfoo has the stronger automated maintenance signal at 90/100. This is not a security or fit verdict.
Side-by-side evidence
Use these signals to narrow your choice, then confirm setup, license, and fit upstream.
| Signal | Promptfoo | crawl4ai |
|---|---|---|
| Evidence status | Basic listing· 2026-10-04 09:17 UTC | Verified snapshot· 2026-10-04 09:19 UTC |
| GitHub stars | 23.5K | 84.7K |
| Weekly growth | +2.3K | 0 |
| Health score | Strong90/100 | Healthy66/100 |
| Contributors | 320 | 95 |
| Commits per week | 74.7 | 10.6 |
| Open issues | 437 | 226 |
| Language | TypeScript | Python |
| License | MIT | Apache-2.0 |
| Last commit | 2026-07-22 17:02 UTC | 2026-09-25 06:37 UTC |
| Last release | 0.121.19 | v0.9.4 |
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